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不同送排风量下脱水机房竖直离子风管的通风除臭效果
Ventilation and deodorizing effect of vertical ionizing air duct in dewatering room under different air supply volume and exhaust volume
投稿时间:2017-11-08  修订日期:2018-04-03
DOI:
中文关键词:  脱水机房  空气品质  离子除臭  数值模拟  排污效率
英文关键词:dewatering room  air quality  ion deodorization  numerical simulation  contaminant removal efficiency
基金项目:国家自然科学基金资助(51778234);广东省自然科学基金资助(2015A030310303);广东省省级科技计划项目(2017A020216024);中央高校基本科研业务费专项资金资助(B6150170);广东省能源高效清洁利用重点实验室(华南理工大学)(No.2013A061401005)
作者单位E-mail
陈思维 华南理工大学电力学院 251226287@qq.com 
刘雪峰 华南理工大学电力学院 lyxfliu@scut.edu.cn 
杨鹏 华南理工大学电力学院  
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中文摘要:
      以地埋式污水处理厂的通风排污系统为研究对象,污水处理时产生的恶臭气体严重影响室内外环境,通风系统中排风与送风风量的合理匹配对于改善厂区内部空气品质至为重要。以空气品质最差的脱水机房为例,对传统的无送风模式以及竖直管侧向离子风下不同风量进行数值模拟,从速度场分布,氨气敏感浓度面积占比,工作区域平均空气龄,以及通风除臭效果进行仿真分析。结果表明:竖直管侧向送离子风比传统无送风模式对改善脱水机房空气品质作用更显著,提高排风风量和新风比可以有效降低室内恶臭浓度和提高排污效率,并且提高新风比对提高排污效率的影响更为显著,给工作人员提供更好的风感和更新鲜的空气。
英文摘要:
      Taking the ventilation and blowdown system of buried water treatment plant as the research object, foul gas produced by sewage treatment seriously affects indoor and outdoor environment. The reasonable matching of exhaust air volume and air supply volume in the ventilation system is essential for the improvement of air quality inside the plant area. Take the dewatering room which has the worst air quality as an example, we make numerical simulation of the traditional air supply model and the situation of different air flow within the ion wind from the sides of vertical tubes. And we make simulation analysis from the perspective of velocity field distribution, area ratio of ammonia sensitive concentration, mean air age in the work area , and ventilation deodorization effect. The results show: relative to the traditional air supply mode, the effect of the composite air supply mode on the improvement of the air quality of the dewatering room is more significant. Increasing the exhaust air volume and the fresh air ratio can effectively reduce the indoor odor concentration and improve the contaminant removal efficiency. Improving fresh air ratio has a more significant impact on improving the contaminant removal efficiency, and it can give the staff a better sense of wind and fresh air.
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